[SECURITY] [DSA 3185-1] libgcrypt11 security update

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Debian Security Advisory DSA-3185-1                   security@debian.org
http://www.debian.org/security/                        Alessandro Ghedini
March 12, 2015                         http://www.debian.org/security/faq
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Package        : libgcrypt11
CVE ID         : CVE-2014-3591 CVE-2015-0837

Multiple vulnerabilities were discovered in libgcrypt:

CVE-2014-3591

    The Elgamal decryption routine was susceptible to a side-channel
    attack discovered by researchers of Tel Aviv University. Ciphertext
    blinding was enabled to counteract it. Note that this may have a
    quite noticeable impact on Elgamal decryption performance.

CVE-2015-0837

    The modular exponentiation routine mpi_powm() was susceptible to a
    side-channel attack caused by data-dependent timing variations when
    accessing its internal pre-computed table.

For the stable distribution (wheezy), these problems have been fixed in
version 1.5.0-5+deb7u3.

We recommend that you upgrade your libgcrypt11 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org